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Patent Searching and Data


Matches 1 - 50 out of 34,258

Document Document Title
WO/2021/005873A1
This power conversion device 30 is provided with: a power conversion circuit 40 for converting primary side power to secondary side power and supplying the secondary side power to a pump 20; and a control circuit 100 for causing the seco...  
WO/2021/006601A1
The present invention relates to a power conversion device and a photovoltaic module comprising same. A power conversion device and a photovoltaic module comprising same according to an embodiment of the present invention comprise: an in...  
WO/2021/004655A1
The invention relates to a system for feeding a DC link and to a method for operating a system, wherein: a sensor for sensing a current in the DC link or a voltage at the DC link is connected to a control means, which controls a second c...  
WO/2021/004451A1
Disclosed in the present application are a PFC circuit and an air conditioner. The PFC circuit comprises: an electric reactor; a rectification circuit; a PFC driving circuit for outputting a corresponding PFC driving signal according to ...  
WO/2021/003885A1
The present application provides a drive control circuit and a home appliance. The drive control circuit comprises: a half-bridge circuit configured to perform conversion processing on a power supply signal, and specifically comprising a...  
WO/2021/003887A1
The present application provides a drive control circuit and a home appliance. The drive control circuit comprises: a half-bridge circuit connected into a bus circuit and configured to convert a power supply signal, each bridge arm of th...  
WO/2021/003886A1
The present application provides a drive control circuit and a home appliance, wherein the circuit comprises a half-bridge circuit connected to a bus circuit and configured to perform conversion processing on a power supply signal. The h...  
WO/2021/007463A1
Technology is described for an electron gun driver including a half bridge driver circuit and a drive controller. The half bridge driver circuit includes a drive circuit configured to generate a grid drive voltage for a grid connection o...  
WO/2021/006816A1
A computer sound card includes a power supply noise isolation circuit for reducing ground plane noise generated during application of heavy electrical loads to the power supply, such as loads presented by computer GPUs. The power supply ...  
WO/2021/005662A1
An abnormality diagnosis system that comprises: an inverter (1-1) that includes a logic circuit (7-1) that controls an electrical circuit that converts power, a first output terminal from which signals are outputted, a first input termin...  
WO/2021/000365A1
Disclosed are an isolated power supply circuit and a control method therefor. The isolated power supply circuit comprises a transmitting end and a receiving end, wherein the transmitting end is connected to a voltage source; and the circ...  
WO/2021/001369A1
A power converter comprises a switch arrangement for controlling a path of current flow through an energy storage element and power commutation thereof so as to provide an output. The switch arrangement comprises at least first and secon...  
WO/2021/001116A1
Galvanically Isolated Single-Phase or Multi-Phase Power Converter for conversion between alternating current and direct current, comprising - DC terminals and AC terminals, - a parallel circuit comprising a DC link capacitor and at least...  
WO/2021/001994A1
A synchronization control circuit (30), wherein: a three-phase AC voltage (VIu, VIv, VIw) supplied from a commercial AC power supply (5) is converted into a vector (VE) on rotating coordinates; a first phase difference (dθ) between the ...  
WO/2021/001888A1
A main circuit power supply device (100) is provided with: a plurality of voltage-dividing electricity accumulation elements (C1-C5) connected in series; voltage adjustment circuits (BC1-BC4) which adjust the voltage of each of the plura...  
WO/2021/000364A1
An isolated power supply chip comprising a planar transformer. The isolated power supply chip comprises a transmitting end and a receiving end. The planar transformer comprises a primary side coil located at the transmitting end and a se...  
WO/2021/003359A1
This application describes a laser driver that can include a voltage source, an inductor, at least one capacitor, a diode laser, and an electronic switch. The switch may be connected to ground and may be configured to alternate between a...  
WO/2021/001771A1
During a first mode of operation, a zero current detect (ZCD) signal is asserted in response to detecting a zero current condition at a switch node of a power converter. The power converter enters a light load mode of operation when the ...  
WO/2021/000620A1
The present application provides a high voltage direct current transmission conversion unit, a control method and device, and a system main circuit. The high voltage direct current transmission conversion unit comprises a first current s...  
WO/2020/261536A1
Provided is a semiconductor device which improves the insulation properties between a semiconductor module and a control circuit while avoiding an increase in size. A semiconductor device (10) equipped with a semiconductor module (120), ...  
WO/2020/263288A1
A multilevel converter system is provided. The multilevel converter system includes a multilevel converter and a short-circuit protection circuit. The multilevel converter includes a first segment and a second segment electrically connec...  
WO/2020/260239A1
System (120) for controlling a switching arm suitable for connecting a phase of a rotor or a stator (U, V, W) of a rotating electric machine (106) for a motor vehicle to a first electrical supply (102), the arm comprising a high side swi...  
WO/2020/263289A1
A control circuit for a power converter is provided. The control circuit includes a pulse width modulator, a current feedback loop, a bus voltage feedforward path, and a logic circuit. The pulse width modulator generates a control signal...  
WO/2020/258512A1
A method and system for starting an MMC in a hybrid direct current transmission system, the method comprising: performing uncontrolled charging on an MMC until the capacitor voltage of a half-bridge sub-module in the MMC reaches a first ...  
WO/2020/263290A1
A converter includes a DC bus, a first DC-DC converter, a second DC-DC converter, and a plurality of circulating current suppression circuits. The first DC-DC converter is coupled to the DC bus and includes a first plurality of switches....  
WO/2020/260965A1
An improved system and method for mitigating DC bias in a SMPC transformer are provided. The system and method mitigate drift in the excitation current using active current balancing in the SMPC transformer. This is accomplished by contr...  
WO/2020/264050A1
A secondary-side control loop for a flyback converter is provided that generates a secondary-side control signal during normal operation using a compensator. In periods of significant load changes, the compensator is bypassed so that the...  
WO/2020/261353A1
An apparatus (100) for driving a switching device (1) is provided with a switching element (E1) and an output unit (21). The output unit (21) comprises: a pair of output terminals (22, 23) connected to the switching device (1) via the sw...  
WO/2020/264189A1
A flyback converter is disclosed that times a detection time for each cycle of a power switch transistor. The detection time ends when a sense resistor voltage exceeds a threshold voltage. Over a half cycle of an AC input voltage to the ...  
WO/2020/263386A1
A power module includes a plurality of power semiconductor devices. The plurality of power semiconductor devices includes an insulated gate bipolar transistor (IGBT) and a metal-oxide-semiconductor field-effect transistor (MOSFET) couple...  
WO/2020/259900A1
A power supply system (12) for an electric arc furnace (10) comprises an AC input (20) connectable to an electrical grid (22) and an AC output (24) for supplying at least one power electrode (14) of the arc furnace (10). The power supply...  
WO/2020/261947A1
A protection device (30) connected to a DC power supply device (50) for outputting DC power to a DC electric circuit (12), the protection device (30) being provided with: a first conductor (31) connected to the high-potential-side output...  
WO/2020/260408A1
The present invention concerns an electrical component (2) comprising, a DC link capacitor (CDCL) and an EMC filter, wherein the electrical component (2) comprises an input port (2a) and an output port (2b), wherein the EMC filter compri...  
WO/2020/263530A1
Communicating fault indications between primary and secondary controller in a secondary-controlled flyback converter is described. In one embodiment, an apparatus includes a primary-side field effect transistor (FET) coupled to a flyback...  
WO/2020/263284A1
A shunt current regulator can be used to maintain current levels at downhole device on a tubing encapsulated cable and improve communication speed between the surface and downhole devices. The shunt current regulator reduces the current ...  
WO/2020/255276A1
A first capacitor (3a) is connected between a positive power source line (61) and a reference power source line (51). A first element (62a) is interposed on the positive power source line (61), the first element (62a) having a first end ...  
WO/2020/254003A1
An isolated converter has a transformer with a primary winding (in a primary side circuit) and a secondary winding magnetically coupled to the primary winding. A first Y-capacitor is electrically connected between the primary side circui...  
WO/2020/253846A1
The invention provides a high power density single-phase cascaded H-bridge rectifier, a control method, and a control system. The high power density single-phase cascaded H-bridge rectifier comprises an AC grid-side filter inductor and a...  
WO/2020/256555A1
The present invention relates to an electrical power energy converter unit for converting Direct Current to Direct Current, DC-DC, with improved efficiency and cold-start capability. In an aspect there is provided a Direct Current to Dir...  
WO/2020/256690A1
A multilevel converter system is provided. The system includes a converter and a converter controller interfaced with the converter. The converter controller includes a voltage loop, a current loop, and a voltage compensation loop. The v...  
WO/2020/256181A1
The present invention relates to a power conversion device, and a vehicle having same. A power conversion device and a vehicle having same according to an embodiment of the present invention comprise: a switching element; a gate driving ...  
WO/2020/256803A1
Various embodiments provide a direct current (DC)-DC converter circuit. The DC-DC converter circuit includes a control circuit to switch the DC-DC converter circuit between a charge state, a discharge state, and a tri-state mode. As part...  
WO/2020/254222A1
The invention relates to a circuit apparatus (10) for controlling the current flow of the secondary side (20) of a direct voltage converter, comprising: a controllable switch element (1) having a first connection (1a), a second connectio...  
WO/2020/255713A1
A power supply device of the present invention comprises: a first circuit; a second circuit; an adjustment means for adjusting electric power supplied to a load; a detection means for detecting a parameter relating to the electric power;...  
WO/2020/256846A1
Mitigation of audible output of one or more components in a charging circuit. A charging circuit may include a mitigation controller operative to monitor a frequency of voltage at an input of a charging circuit. The frequency of the volt...  
WO/2020/255247A1
The leakage current reduction device according to an embodiment is provided with: a voltage detection unit having an inductor for detecting voltage generated by a leakage current; a compensation voltage generation unit for generating a c...  
WO/2020/257392A1
A dual integrator system (200) comprises two integrators (220A-B), an output stage (270), and a switching network (240 A-D). The first and second integrators receive a differential Hall sensor signal (205, 210) and a reference voltage (2...  
WO/2020/255184A1
A power conversion device (10) for converting AC power to DC power, the device being provided with: a first switching main circuit (101) having a series circuit of a first switching element (Q1) and a second switching element (Q2) connec...  
WO/2020/253026A1
Disclosed are a current sampling circuit (11), a current zero-crossing detection circuit, and a totem-pole bridgeless PFC circuit and a control method therefor. A switch control link is connected in series to a secondary side of a curren...  
WO/2020/257534A1
A combined bi-directional converter and an auxiliary power module circuit for an 800V battery of an electric vehicle. The converter providing a stepped voltage of 400V with a duty ratio of 50 percent. The combined circuit comprises a hig...  

Matches 1 - 50 out of 34,258